Although I like the idea, I wonder if enclosing it like that will be a problem with heat from the electronics and not having a case ground
I'm wondering about heat. Not sure that the PCM generates much heat on its own. Engine bay ambient is probably worse. The case will be grounded when I'm finished. This definitely can keep water away from it.
When I swapped the 2.3s from the 96 XLT to the 93 XL. I had to extend the wiring on the ECU. All I had was a roll of white 16 awg thhn. I cut and spiced each wire one at a time. I staggered each connection so I could fit it inside some split loom. It was a pain in the butt. Actually looked nice after i was done. I ended up swapping dash and everything by the end. I did have AC after that. It had a vacuum issue I never resolved. When you were on the accelerator it would blow through the defrost vents. Then go back to normal after you let off. I still see that 93 around town from time to time. I only know cause the guy never fixed the bed side I modified with a tree that winter. The 96 2.3 only had 50k on it when I put it in the truck. I wonder how many is on it now 20 years later.
